How to use

HttpClientUtil

in

org.pentaho.di.core.util

/**
 * Returns context with AuthCache or null in case of any exception was thrown.
 * Use "http" schema.
 *
 * @param host
 * @param port
 * @param user
 * @param password
 * @return {@link org.apache.http.client.protocol.HttpClientContext HttpClientContext}
 */
public static HttpClientContext createPreemptiveBasicAuthentication( String host, int port, String user,
                                   String password ) {
 return createPreemptiveBasicAuthentication( host, port, user, password, "http" );
}

/**
 *
 * @param response the httpresponse for processing
 * @param charset the charset used for getting HttpEntity
 * @return HttpEntity in decoded String representation using provided charset
 * @throws IOException
 */
public static String responseToString( HttpResponse response, Charset charset ) throws IOException {
 return responseToString( response, charset, false );
}

public static String sendStartJobRequest( String urlString, String authentication ) throws Exception {
 HttpGet method = new HttpGet( urlString );
 HttpClientContext context = HttpClientUtil.createPreemptiveBasicAuthentication( host, port, user, password );
 //adding authorization token
 if ( authentication != null ) {
  method.addHeader( new BasicHeader( "Authorization", authentication ) );
 }
 //executing method
 HttpClient client = HttpClientManager.getInstance().createDefaultClient();
 HttpResponse httpResponse = context != null ? client.execute( method, context ) : client.execute( method );
 int code = httpResponse.getStatusLine().getStatusCode();
 String response = HttpClientUtil.responseToString( httpResponse );
 method.releaseConnection();
 if ( code >= HttpStatus.SC_BAD_REQUEST ) {
  System.out.println( "Error occurred during starting job." );
  return null;
 }
 return response;
}

 public static void sendGetImageRequest( String urlString, String authentication, String fileName ) throws Exception {
  HttpGet method = new HttpGet( urlString );
  HttpClientContext context = HttpClientUtil.createPreemptiveBasicAuthentication( host, port, user, password );
  //adding authorization token
  if ( authentication != null ) {
   method.addHeader( new BasicHeader( "Authorization", authentication ) );
  }

  //executing method
  HttpClient client = HttpClientManager.getInstance().createDefaultClient();
  HttpResponse httpResponse = context != null ? client.execute( method, context ) : client.execute( method );
  int code = httpResponse.getStatusLine().getStatusCode();
  byte[] response = HttpClientUtil.responseToByteArray( httpResponse );
  method.releaseConnection();
  if ( code >= HttpStatus.SC_BAD_REQUEST ) {
   System.out.println( "Error occurred during getting transformation image." );
  }
  System.out.println( "Image was stored to " + fileName );
  FileOutputStream fos = null;
  try {
   fos = new FileOutputStream( fileName );
   fos.write( response );
   fos.flush();
  } finally {
   fos.close();
  }
 }
}

public static String sendPauseTransRequest( String urlString, String authentication ) throws Exception {
 HttpGet method = new HttpGet( urlString );
 HttpClientContext context = HttpClientUtil.createPreemptiveBasicAuthentication( host, port, user, password );
 //adding authorization token
 if ( authentication != null ) {
  method.addHeader( new BasicHeader( "Authorization", authentication ) );
 }
 //executing method
 HttpClient client = HttpClientManager.getInstance().createDefaultClient();
 HttpResponse httpResponse = context != null ? client.execute( method, context ) : client.execute( method );
 int code = httpResponse.getStatusLine().getStatusCode();
 String response = HttpClientUtil.responseToString( httpResponse );
 method.releaseConnection();
 if ( code >= HttpStatus.SC_BAD_REQUEST ) {
  System.out.println( "Error occurred during pausing transformation." );
  return null;
 }
 return response;
}

public static boolean sendGetImageRequest( String urlString, String authentication, String fileName )
 throws Exception {
 HttpGet method = new HttpGet( urlString );
 HttpClientContext context = HttpClientUtil.createPreemptiveBasicAuthentication( host, port, user, password );
 //adding authorization token
 if ( authentication != null ) {
  method.addHeader( new BasicHeader( "Authorization", authentication ) );
 }
 //executing method
 HttpClient client = HttpClientManager.getInstance().createDefaultClient();
 HttpResponse httpResponse = context != null ? client.execute( method, context ) : client.execute( method );
 int code = httpResponse.getStatusLine().getStatusCode();
 byte[] response = HttpClientUtil.responseToByteArray( httpResponse );
 method.releaseConnection();
 if ( code >= HttpStatus.SC_BAD_REQUEST ) {
  System.out.println( "Error occurred during getting job image." );
  return false;
 }
 FileOutputStream fos = null;
 try {
  fos = new FileOutputStream( fileName );
  fos.write( response );
  fos.flush();
 } finally {
  fos.close();
 }
 return true;
}

public static String sendStopJobRequest( String urlString, String authentication ) throws Exception {
 HttpGet method = new HttpGet( urlString );
 HttpClientContext context = HttpClientUtil.createPreemptiveBasicAuthentication( host, port, user, password );
 //adding authorization token
 if ( authentication != null ) {
  method.addHeader( new BasicHeader( "Authorization", authentication ) );
 }
 //executing method
 HttpClient client = HttpClientManager.getInstance().createDefaultClient();
 HttpResponse httpResponse = context != null ? client.execute( method, context ) : client.execute( method );
 int code = httpResponse.getStatusLine().getStatusCode();
 String response = HttpClientUtil.responseToString( httpResponse );
 method.releaseConnection();
 if ( code >= HttpStatus.SC_BAD_REQUEST ) {
  System.out.println( "Error occurred during stopping job." );
  return null;
 }
 return response;
}

 userString = user;
 httpClient = getHttpClient( user, password );
 context = HttpClientUtil.createPreemptiveBasicAuthentication( uri.getHost(), portInt, user, password );
} else {
 httpClient = getHttpClient();

/**
 *
 * @param response the httpresponse for processing
 * @return HttpEntity in String representation using "UTF-8" encoding
 * @throws IOException
 */
public static String responseToString( HttpResponse response ) throws IOException {
 return responseToString( response, Charset.forName( StandardCharsets.UTF_8.name() ) );
}

public static String sendGetJobStatusRequest( String urlString, String authentication ) throws Exception {
 HttpGet method = new HttpGet( urlString );
 HttpClientContext context = HttpClientUtil.createPreemptiveBasicAuthentication( host, port, user, password );
 //adding authorization token
 if ( authentication != null ) {
  method.addHeader( new BasicHeader( "Authorization", authentication ) );
 }
 //executing method
 HttpClient client = HttpClientManager.getInstance().createDefaultClient();
 HttpResponse httpResponse = context != null ? client.execute( method, context ) : client.execute( method );
 int code = httpResponse.getStatusLine().getStatusCode();
 String response = HttpClientUtil.responseToString( httpResponse );
 method.releaseConnection();
 if ( code >= HttpStatus.SC_BAD_REQUEST ) {
  System.out.println( "Error occurred during getting job status." );
  return null;
 }
 return response;
}

public static void allocateServerSocket( String urlString, String authentication ) throws Exception {
 HttpGet method = new HttpGet( urlString );
 HttpClientContext context = HttpClientUtil.createPreemptiveBasicAuthentication( host, port, user, password );
 method.addHeader( new BasicHeader( "Content-Type", "text/xml;charset=UTF-8" ) );
 //adding authorization token
 if ( authentication != null ) {
  method.addHeader( new BasicHeader( "Authorization", authentication ) );
 }
 //executing method
 HttpClient client = HttpClientManager.getInstance().createDefaultClient();
 HttpResponse httpResponse = context != null ? client.execute( method, context ) : client.execute( method );
 int code = httpResponse.getStatusLine().getStatusCode();
 String response = HttpClientUtil.responseToString( httpResponse );
 method.releaseConnection();
 if ( code >= HttpStatus.SC_BAD_REQUEST ) {
  System.out.println( "Error occurred during ports allocation." );
 }
 System.out.println( "Server response:" );
 System.out.println( response );
}

public static String sendStartTransRequest( String urlString, String authentication ) throws Exception {
 HttpGet method = new HttpGet( urlString );
 HttpClientContext context = HttpClientUtil.createPreemptiveBasicAuthentication( host, port, user, password );
 //adding authorization token
 if ( authentication != null ) {
  method.addHeader( new BasicHeader( "Authorization", authentication ) );
 }
 //executing method
 HttpClient client = HttpClientManager.getInstance().createDefaultClient();
 HttpResponse httpResponse = context != null ? client.execute( method, context ) : client.execute( method );
 int code = httpResponse.getStatusLine().getStatusCode();
 String response = HttpClientUtil.responseToString( httpResponse );
 method.releaseConnection();
 if ( code >= HttpStatus.SC_BAD_REQUEST ) {
  System.out.println( "Error occurred during starting transformation." );
  return null;
 }
 return response;
}

public static String sendPrepareExecutionTransRequest( String urlString, String authentication ) throws Exception {
 HttpGet method = new HttpGet( urlString );
 HttpClientContext context = HttpClientUtil.createPreemptiveBasicAuthentication( host, port, user, password );
 //adding authorization token
 if ( authentication != null ) {
  method.addHeader( new BasicHeader( "Authorization", authentication ) );
 }
 //executing method
 HttpClient client = HttpClientManager.getInstance().createDefaultClient();
 HttpResponse httpResponse = context != null ? client.execute( method, context ) : client.execute( method );
 int code = httpResponse.getStatusLine().getStatusCode();
 String response = HttpClientUtil.responseToString( httpResponse );
 method.releaseConnection();
 if ( code >= HttpStatus.SC_BAD_REQUEST ) {
  System.out.println( "Error occurred during preparing transformation execution." );
  return null;
 }
 return response;
}

public static String sendRemoveTransRequest( String urlString, String authentication ) throws Exception {
 HttpGet method = new HttpGet( urlString );
 HttpClientContext context = HttpClientUtil.createPreemptiveBasicAuthentication( host, port, user, password );
 //adding authorization token
 if ( authentication != null ) {
  method.addHeader( new BasicHeader( "Authorization", authentication ) );
 }
 //executing method
 HttpClient client = HttpClientManager.getInstance().createDefaultClient();
 HttpResponse httpResponse = context != null ? client.execute( method, context ) : client.execute( method );
 int code = httpResponse.getStatusLine().getStatusCode();
 String response = HttpClientUtil.responseToString( httpResponse );
 method.releaseConnection();
 if ( code >= HttpStatus.SC_BAD_REQUEST ) {
  System.out.println( "Error occurred during removing transformation." );
  return null;
 }
 return response;
}

 public static void sendGetTransStatusRequest( String urlString, String authentication ) throws Exception {
  HttpGet method = new HttpGet( urlString );
  HttpClientContext context = HttpClientUtil.createPreemptiveBasicAuthentication( host, port, user, password );
  //adding authorization token
  if ( authentication != null ) {
   method.addHeader( new BasicHeader( "Authorization", authentication ) );
  }

  //executing method
  HttpClient client = HttpClientManager.getInstance().createDefaultClient();
  HttpResponse httpResponse = context != null ? client.execute( method, context ) : client.execute( method );
  int code = httpResponse.getStatusLine().getStatusCode();
  String response = HttpClientUtil.responseToString( httpResponse );
  method.releaseConnection();
  if ( code >= HttpStatus.SC_BAD_REQUEST ) {
   System.out.println( "Error occurred during getting job status." );
  }
  System.out.println( "Server response:" );
  System.out.println( response );
 }
}

 public static void sendExecuteRequest( String urlString, String authentication ) throws Exception {
  HttpGet method = new HttpGet( urlString );
  HttpClientContext context = HttpClientUtil.createPreemptiveBasicAuthentication( host, port, user, password );
  method.addHeader( new BasicHeader( "Content-Type", "text/xml;charset=UTF-8" ) );
  //adding authorization token
  if ( authentication != null ) {
   method.addHeader( new BasicHeader( "Authorization", authentication ) );
  }

  //executing method
  HttpClient client = HttpClientManager.getInstance().createDefaultClient();
  HttpResponse httpResponse = context != null ? client.execute( method, context ) : client.execute( method );
  int code = httpResponse.getStatusLine().getStatusCode();
  String response = HttpClientUtil.responseToString( httpResponse );
  method.releaseConnection();
  if ( code >= HttpStatus.SC_BAD_REQUEST ) {
   System.out.println( "Error occurred during transformation execution." );
  }
  System.out.println( "Server response (expected to be empty):" );
  System.out.println( response );
 }
}

public static void sendGetSlavesRequest( String urlString, String authentication ) throws Exception {
 HttpGet method = new HttpGet( urlString );
 HttpClientContext context = HttpClientUtil.createPreemptiveBasicAuthentication( host, port, user, password );
 //adding authorization token
 if ( authentication != null ) {
  method.addHeader( new BasicHeader( "Authorization", authentication ) );
 }
 //executing method
 HttpClient client = HttpClientManager.getInstance().createDefaultClient();
 HttpResponse httpResponse = context != null ? client.execute( method, context ) : client.execute( method );
 int code = httpResponse.getStatusLine().getStatusCode();
 String response = HttpClientUtil.responseToString( httpResponse );
 method.releaseConnection();
 if ( code >= HttpStatus.SC_BAD_REQUEST ) {
  System.out.println( "Error occurred during getting slave servers." );
 }
 System.out.println( "Server response:" );
 System.out.println( response );
}

public static void addPackageToServlet( String urlString, InputStream is, String authentication ) throws Exception {
 HttpPost method = new HttpPost( urlString );
 method.setEntity( new InputStreamEntity( is ) );
 HttpClientContext context = HttpClientUtil.createPreemptiveBasicAuthentication( host, port, user, password );
 method.addHeader( new BasicHeader( "Content-Type", "binary/zip" ) );
 //adding authorization token
 if ( authentication != null ) {
  method.addHeader( new BasicHeader( "Authorization", authentication ) );
 }
 //executing method
 HttpClient client = HttpClientManager.getInstance().createDefaultClient();
 HttpResponse httpResponse = context != null ? client.execute( method, context ) : client.execute( method );
 int code = httpResponse.getStatusLine().getStatusCode();
 String response = HttpClientUtil.responseToString( httpResponse );
 method.releaseConnection();
 if ( code >= HttpStatus.SC_BAD_REQUEST ) {
  System.out.println( "Error occurred during export submission." );
 }
 System.out.println( "Server response:" );
 System.out.println( response );
}

public static String sendStopTransRequest( String urlString, String authentication ) throws Exception {
 HttpGet method = new HttpGet( urlString );
 HttpClientContext context = HttpClientUtil.createPreemptiveBasicAuthentication( host, port, user, password );
 //adding authorization token
 if ( authentication != null ) {
  method.addHeader( new BasicHeader( "Authorization", authentication ) );
 }
 //executing method
 HttpClient client = HttpClientManager.getInstance().createDefaultClient();
 HttpResponse httpResponse = context != null ? client.execute( method, context ) : client.execute( method );
 int code = httpResponse.getStatusLine().getStatusCode();
 String response = HttpClientUtil.responseToString( httpResponse );
 method.releaseConnection();
 if ( code >= HttpStatus.SC_BAD_REQUEST ) {
  System.out.println( "Error occurred during stopping transformation." );
  return null;
 }
 return response;
}

public static String sendSniffStepRequest( String urlString, String authentication ) throws Exception {
 HttpGet method = new HttpGet( urlString );
 HttpClientContext context = HttpClientUtil.createPreemptiveBasicAuthentication( host, port, user, password );
 //adding authorization token
 if ( authentication != null ) {
  method.addHeader( new BasicHeader( "Authorization", authentication ) );
 }
 //executing method
 HttpClient client = HttpClientManager.getInstance().createDefaultClient();
 HttpResponse httpResponse = context != null ? client.execute( method, context ) : client.execute( method );
 int code = httpResponse.getStatusLine().getStatusCode();
 String response = HttpClientUtil.responseToString( httpResponse );
 method.releaseConnection();
 if ( code >= HttpStatus.SC_BAD_REQUEST ) {
  System.out.println( "Error occurred during starting job." );
  return null;
 }
 return response;
}